If a1 and a2 are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement ?

Related Mcqs:

With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop___________________?

A. Decreases B. Remains unchanged C. Increases D. Decreases exponentially...

For gas absorption, low viscosity solvents are preferred, because of their ____________________?

A. Better flow characteristics B. Low pumping pressure drop C. Rapid absorption rates D. All A., B. and C....

Design calculation for multiple component distillation is done by_________________?

A. Ponchon-Savarit method B. McCabe-Thiele method C. Enthalpy concentration method D. Tray to tray calculations...

A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))_____________?

A. M(Xo – XF) B. M(Xo/XF) C. M ln(Xo/XF) D. MXo ln(Xo/XF)...

Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in_________________?

A. Decreased solute solubility B. Large minimum liquid to gas (L/G) ratio C. Large number of trays D. All A., B. and C....